Abstract
Ba (Zr0.2Ti0.8) O3-50% (Ba0.7Ca0.3) TiO3 (BZT-0.5BCT) ceramics with different doping contents of Pr3+ were prepared by the conventional solid-state reaction. The phase structure and crystallinity of the fabricated ceramics were investigated by X-ray diffraction, Raman spectroscopy, and scanning electron microscopy. Photoluminescence (PL) emission spectra were measured to analyze the PL characteristics. The strong intensities of a green band at 489 nm and a red band at 610 nm were observed. The maximum emission intensity of the PL spectrum was achieved in the BZT-0.5BCT ceramic with 0.2% mol of Pr3+ ions. Furthermore, the PL spectra of BZT-0.5BCT ceramics were found to be sensitive to polarization of the ferroelectric ceramics. Compared with the unpoled ceramics, the green emission increased about 42% and a new emission peak at 430 nm appeared for the poled ceramics. With excellent intrinsic ferroelectricity and an enhanced PL property, such material has potential to realize multifunctionality in a wide application range.
Highlights
In recent years, perovskite materials have attracted wide attention for their excellent physical properties, such as piezoelectricity, ferroelectricity, and ferromagnetism [1,2,3,4]
Based on the X-ray diffraction analysis (XRD) results, the schematic illustration for the crystal structure of Pr3+-doped BZT-0.5BCT ceramics can be described as Figure 1c
The Pr3+-doped BZT-0.5BCT ceramics were prepared via a conventional solid-state reaction method
Summary
Perovskite materials have attracted wide attention for their excellent physical properties, such as piezoelectricity, ferroelectricity, and ferromagnetism [1,2,3,4]. The photoluminescence (PL) behavior of rare-earth-doped perovskite material is extensively studied for its wide range of applications [7,8,9,10,11]. The resulting materials show multifunctional properties, which can combine the PL property with excellent ferroelectricity or dielectric properties in one material, and possess high potential for coupling devices, sensors, and other multifunctional applications. It is well-known that (Ba, Ca) TiO3 (abbreviated as BCT) is a typical perovskite material [16,17,18]. There are few surveys on the improvement of PL properties of BCTZ-based ceramics
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